Just a Power Cube requires a lot of components. I'm worried that the design of the Cube will change, so I'm buying parts piecemeal. I'm also curious how much a Power Cube costs. I made a spreadsheet to track what I've ordered and how much it costs. From this I'll be able to compute total cost. You can see my spreadsheet here (and below). I copied liberally from the spreadsheets that OSE provides for the Cube. I will update it as work proceeds.